Results 11 to 20 of about 81,148 (267)
FSD-BRIEF: A Distorted BRIEF Descriptor for Fisheye Image Based on Spherical Perspective Model
Sensors, 2021 Fisheye images with a far larger Field of View (FOV) have severe radial distortion, with the result that the associated image feature matching process cannot achieve the best performance if the traditional feature descriptors are used.
Yutong Zhang +4 more
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Applied Sciences, 2020 High reliability is the basic requirement of aerospace pyrotechnic devices. Traditional reliability evaluation methods require a lot of tests, which become too expensive; therefore, the small-sample evaluation method is needed to reduce the cost.
Yubo Zhu +3 more
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Mathematics, 2023 This paper constructs highly accurate and efficient time integration methods for the solution of transient problems. The motion equations of transient problems can be described by the first-order ordinary differential equations, in which the right-hand ...
Yi Ji, Yufeng Xing
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International Journal of Aerospace Engineering, 2016 Random disturbance factors would lead to the variation of target acquisition point during the long distance flight. To acquire a high target acquisition probability and improve the impact precision, missiles should be guided to an appropriate target ...
Xiao Liu +4 more
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Broadband dual-anisotropic solid metamaterials
Scientific Reports, 2017 We have proposed solid elastic metamaterials with anisotropic stiffness and inertial mass simultaneously, denoted as the dual anisotropy, for the potential use of elastic wave controlling.
Yong Cheng, Xiaoming Zhou, Gengkai Hu
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Theoretical and Applied Mechanics Letters, 2015 We investigate the interaction between a positive mass and a negative effective mass through a three-mass chain connected with elastic springs, a pair of masses is designed to have an effective negative mass, and it interacts with the third positive one ...
Jiao Zhou +4 more
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LdsConv: Learned Depthwise Separable Convolutions by Group Pruning
Sensors, 2020 Standard convolutional filters usually capture unnecessary overlap of features resulting in a waste of computational cost. In this paper, we aim to solve this problem by proposing a novel Learned Depthwise Separable Convolution (LdsConv) operation that ...
Wenxiang Lin +4 more
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Composite Multiscale Transition Permutation Entropy-Based Fault Diagnosis of Bearings
Sensors, 2022 When considering the transition probability matrix of ordinal patterns, transition permutation entropy (TPE) can effectively extract fault features by quantifying the irregularity and complexity of signals.
Jing Guo +4 more
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IEEE Open Journal of Vehicular TechnologySoftware-defined vehicles (SDVs) require modular and transparent simulation tools for safety-critical control system development and validation. This paper introduces VDCWorkbench, a source-available Modelica library for vehicle dynamics, control, and ...
Jonathan Brembeck +6 more
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Sound reduction by metamaterial-based acoustic enclosure
AIP Advances, 2014 In many practical systems, acoustic radiation control on noise sources contained within a finite volume by an acoustic enclosure is of great importance, but difficult to be accomplished at low frequencies due to the enhanced acoustic-structure ...
Shanshan Yao +3 more
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